Words, it seems, evolve too. But some evolve very slowly and, apparently, some in use today would have been understood 20,000 years ago. Not quite sure where (or when) that put's McIntosh's tower of Babel. That's just Indo-European btw. Goodness how far words go back into African history.

Telegraph wrote:Stone Age phrasebook developed by scientists studying oldest wordsSome of the oldest words in use in have been identified by scientists studying the evolution of language.By Alastair Jamieson